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Earnings (Loss) Per Share, Anti Dilutive (Details) (Unexercised stock appreciation rights [Member])
3 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Unexercised stock appreciation rights [Member]
     
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Antidilutive securities excluded from computation of earnings per share, amount (in shares) 262,461 262,461 262,461